In this instance, it renders the discussion incomplete.
When talking about the tax burden, leaving out taxes that fall more heavily on those with less income in order to make a point about how those with less income pay no taxes is dishonest, at best.
And?
Name me one tax that falls on those with less income and please back it up with concrete facts, not liberal rhetoric.
"Any Government Big Enough To Give You Everything You Want Is Also Big Enough To Take Everything You Have."-Thomas Jefferson